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Samsung M395T2863QZ4 M395T2863QZ4-CE660 Benutzerhandbuch

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M395T2863QZ4-CE660
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Seite von 42
Rev. 1.4 May 2009
FBDIMM 
DDR2 SDRAM
 10 of 42
Figure 9. Basic DRAM Write Data Transfers on FBD
Figure 10. Simultaneous RD / WR Data Transfers
ACT1
NOP
NOP
ACT1
1
2
3
4
5
FBD southbound
cmd/data
DIMM 1 cmd
DIMM 1 data
DIMM 2 cmd
DIMM 2 data
FBD northbound
data
1
2
3
4
5
6
7
8
9
10
11
12
13
WR1
Wdata
Wdata
WR1
NOP
Wdata
Wdata
NOP
Wdata
Wdata
NOP
Wdata
Wdata
SYNC
1010
0101
Status
Fixed fall through time
ACT1
1
2
3
4
5
FBD southbound
cmd/data
DIMM 1 cmd
DIMM 1 data
DIMM 2 cmd
DIMM 2 data
FBD northbound
data
1
2
3
4
5
6
7
8
9
10
11
12
13
RD1
Wdata
Wdata
RD1
ACT3
Wdata
Wdata
WR2
NOP
NOP
RD3
NOP
NOP
SYNC
1010
0101
Status
ACT2
Wdata
Wdata
ACT1
Wdata
Wdata
ACT3
RD3
ACT2
WR2